ER2209-Duplex Stainless Steel Wire ‌

Technical Compliance‌: AWS 5.14 Class ER2209 / ASME SFA 5.14 Class ER2209

Product Overview

ER2209 is a premium duplex stainless steel welding wire engineered for superior performance in both GTAW (TIG) and GMAW (MIG) welding processes. With a balanced chemical composition of 22% Chromium, 9% Nickel, and 3% Molybdenum, it is specifically designed for welding UNS S31803 (Alloy 2205) and other 22% Cr duplex stainless steels, delivering an optimal combination of high strength and exceptional corrosion resistance.

Key Features & Benefits

• Advanced Duplex Structure: The unique ferritic-austenitic microstructure of ER2209 provides an outstanding combination of high tensile strength and excellent ductility.

• Optimized Chemical Composition: Contains approximately 22Cr-9Ni-3Mo, matching perfectly with base metals like Alloy 2205 to ensure superior weld quality and long-term reliability.

• Superior Corrosion Resistance: Offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC), making it suitable for harsh chemical and marine environments.

• High Strength: Delivers superior mechanical properties compared to conventional austenitic stainless steels, making it ideal for structural applications requiring durability.

• Excellent Weldability: Produces smooth, clean welds with minimal spatter, reducing post-weld cleanup time and labor costs.

Technical Specifications

• Standards Compliance: Meets AWS A5.18 ER2209 specifications and relevant international standards for duplex stainless steel welding.

• Chemical Composition:

• Chromium: 21-23%

• Nickel: 8-10%

• Molybdenum: 2.5-3.5%

• Balanced ferrite-austenite phase ratio (typically 40-60% ferrite).

• Available Diameters: 0.8mm, 1.0mm, 1.2mm, and 1.6mm for precision and adaptability across various project requirements.

Applications

• Oil & Gas Industry: Ideal for pipelines, pressure vessels, and offshore platforms exposed to sour gas (H₂S) and chloride-containing environments.

• Chemical Processing Equipment: Tanks, reactors, and heat exchangers handling corrosive media and demanding temperature conditions.

• Marine and Coastal Applications: Components subjected to saltwater immersion, splash zones, and aggressive marine atmospheres.

• Pulp and Paper Industry: Equipment exposed to corrosive chemicals and high-stress operating environments.

Usage Guidelines

1. Surface Preparation: Clean welding surfaces thoroughly to remove oil, moisture, and other contaminants, ensuring optimal weld integrity and minimizing defects. This step is crucial for achieving the desired corrosion resistance and mechanical properties.

2. Shielding Gas: Use high-purity shielding gases (Argon or Argon mixtures) to protect the weld pool from oxidation.

3. Environmental Control: Protect welding areas from wind and drafts that could disrupt the protective gas shield and compromise weld quality.

Why Choose ER2209?

ER2209 combines advanced material science with practical welding advantages, providing reliable performance in critical applications where both strength and corrosion resistance are essential.

   Guaranteed Value